Pero hace que trabajar con código asíncrono sea mucho más fácil.

Esta misma sintaxis (o casi idéntica) también se incluyó recientemente en las versiones modernas de JavaScript (en Browser y NodeJS).

Pero antes de eso, manejar código asíncrono era bastante más complejo y difícil.

### <a href="https://nestjs.com/" class="external-link" target="_blank">NestJS</a> (et <a href="https://angular.io/" class="external-link" target="_blank">Angular</a>)

Ce n'est même pas du Python, NestJS est un framework JavaScript (TypeScript) NodeJS inspiré d'Angular.

Il réalise quelque chose de similaire à ce qui peut être fait avec Flask-apispec.

=== "Python"

    ```Python
    {!> ../../../docs_src/generate_clients/tutorial004.py!}
    ```

=== "Node.js"

    ```Javascript
    {!> ../../../docs_src/generate_clients/tutorial004.js!}
    ```

=== "Python"

    ```Python
    {!> ../../../docs_src/generate_clients/tutorial004.py!}
    ```

=== "Node.js"

    ```Javascript
    {!> ../../../docs_src/generate_clients/tutorial004.js!}
    ```

### 其他形式的异步代码

这种使用 `async` 和 `await` 的风格在语言中相对较新。

但它使处理异步代码变得容易很多。

这种相同的语法（或几乎相同）最近也包含在现代版本的 JavaScript 中（在浏览器和 NodeJS 中）。

但在此之前，处理异步代码非常复杂和困难。

在以前版本的 Python，你可以使用多线程或者 <a href="https://www.gevent.org/" class="external-link" target="_blank">Gevent</a>。但代码的理解、调试和思考都要复杂许多。

在以前版本的 NodeJS / 浏览器 JavaScript 中，你会使用"回调"，因此也可能导致<a href="http://callbackhell.com/" class="external-link" target="_blank">回调地狱</a>。

## 协程

If you have multiple changes to accept (and you're sure they ought to be accepted instead of corrected), you can use the `Accept Changes for all Errors` button to speed the process.
This button will cause a Javascript alert dialog to appear asking you to type a reason for accepting the changes, e.g. "Added new API for Gradle 8.x".

must observe a value actually written to that location (perhaps by a concurrent executing goroutine)
and not yet overwritten.
These implementation constraints make Go more like Java or JavaScript,
in that most races have a limited number of outcomes,
and less like C and C++, where the meaning of any program with a race
is entirely undefined, and the compiler may do anything at all.

## `python-jose` installieren.

Wir müssen <abbr title="JOSE: JavaScript Object Signing and Encryption">`python-jose`</abbr> installieren, um die JWT-Tokens in Python zu generieren und zu verifizieren:

<div class="termy">

```console
$ pip install "python-jose[cryptography]"

---> 100%

   *
   * <p>This test might fail in GWT because the GWT emulations might count on the input collection
   * not to change during the copy. It is safe to do so in GWT because javascript is
   * single-threaded.
   */
  @GwtIncompatible // GWT is single threaded
  public void testCopyOf_threadSafe() {
    /*
     * The actual collections that we pass as inputs will be wrappers around these, so

   *
   * <p>This test might fail in GWT because the GWT emulations might count on the input collection
   * not to change during the copy. It is safe to do so in GWT because javascript is
   * single-threaded.
   */
  @GwtIncompatible // GWT is single threaded
  public void testCopyOf_threadSafe() {
    /*
     * The actual collections that we pass as inputs will be wrappers around these, so